Tuesday 22 April 2014

combinatorics - Find the Number of non decreasing Sequence

We know the No. of Non decreasing Sequence of length N is (9+N)CN How can we find the number of decreasing Sequence in a Range [a,b] of length 1 to N;

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real analysis - How to find $lim_{hrightarrow 0}frac{sin(ha)}{h}$

How to find $\lim_{h\rightarrow 0}\frac{\sin(ha)}{h}$ without lhopital rule? I know when I use lhopital I easy get $$ \lim_{h\rightarrow 0}...